This is a bit basic, isn't it?
Minimum Trip Fuel is achieved at Maximum Range Cruise. This is achieved at Cost Index = 0, both Airbus and Boeing. This is FULLY compensated for Wind Input (both manufacturers).
Long Range Cruise is now an out-dated concept, being a compromise speed achieving 99% of optimum range. Most currently used CIs are less than LRC.... forget LRC.
Maximum Endurance (or Minimum Fuel Flow) is achieved at Recommended Holding Speed (Boeing) or Green dot speed (Airbus). Wind has no effect.
Best Regards,
Old Smokey